/usr/lib/x86_64-linux-gnu/jabberd2/mod_session.so is in jabberd2 2.2.17-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/jabberd2/mod_session.so.0.0.0
/usr/lib/x86_64-linux-gnu/jabberd2/mod_session.so.0.0.0